Driver. TLC5925 Datasheet

TLC5925 Datasheet PDF


Part

TLC5925

Description

Low-Power 16-Channel Constant-Current LED Sink Driver

Manufacture

etcTI

Page 29 Pages
Datasheet
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TLC5925 Datasheet
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TLC5925
SLVS765B – OCTOBER 2008 – REVISED SEPTEMBER 2015
TLC5925 Low-Power 16-Channel Constant-Current LED Sink Driver
1 Features
1 16 Constant-Current Output Channels
• Constant Output Current Invariant to Load Voltage
Change
• Excellent Output Current Accuracy:
– Between Channels: < ±4% (Max)
– Between ICs: < ±6% (Max)
• Constant Output Current Range:
3 mA to 45 mA
• Output Current Adjusted By External Resistor
• Fast Response of Output Current, OE (Min):
100 ns
• 30-MHz Clock Frequency
• Schmitt-Trigger Inputs
• 3.3-V to 5-V Supply Voltage
• Thermal Shutdown for Overtemperature
Protection
• ESD Performance: 1-kV HBM
2 Applications
• Gaming Machine and Entertainment
• General LED Applications
• LED Display Systems
• Signs LED Lighting
• White Goods
3 Description
The TLC5925 is designed for LED displays and LED
lighting applications. The TLC5925 contains a 16-bit
shift register and data latches, which convert serial
input data into parallel output format. At the TLC5925
output stage, 16 regulated-current ports provide
uniform and constant current for driving LEDs within a
wide range of VF variations. Used in system design
for LED display applications (such as, LED panels),
the TLC5925 provides great flexibility and device
performance. Users can adjust the output current
from 3 mA to 45 mA through an external resistor,
Rext, which gives flexibility in controlling the light
intensity of LEDs. TLC5925 is designed for up to
17 V at the output port. The high clock frequency, 30
MHz, also satisfies the system requirements of high-
volume data transmission.
The serial data is transferred into TLC5925 via SDI,
shifted in the shift register, and transferred out via
SDO. LE can latch the serial data in the shift register
to the output latch. OE enables the output drivers to
sink current.
Device Information (1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
SSOP (24)
8.65 mm × 3.90 mm
TLC5925
SOIC (24)
15.40 mm × 7.50 mm
TSSOP (24)
7.80 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

TLC5925 Datasheet
TLC5925
SLVS765B – OCTOBER 2008 – REVISED SEPTEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics: VDD = 3 V......................... 5
6.6 Electrical Characteristics: VDD = 5.5 V..................... 6
6.7 Power Dissipation and Thermal Impedance ............. 6
6.8 Timing Requirements ................................................ 7
6.9 Switching Characteristics: VDD = 3 V........................ 7
6.10 Switching Characteristics: VDD = 5.5 V................... 8
6.11 Typical Characteristics ............................................ 9
7 Parameter Measurement Information ................ 10
8 Detailed Description ............................................ 12
8.1 Overview ................................................................. 12
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 13
9 Application and Implementation ........................ 14
9.1 Application Information............................................ 14
9.2 Typical Application ................................................. 15
10 Power Supply Recommendations ..................... 16
11 Layout................................................................... 16
11.1 Layout Guidelines ................................................. 16
11.2 Layout Example .................................................... 17
12 Device and Documentation Support ................. 18
12.1 Community Resources.......................................... 18
12.2 Trademarks ........................................................... 18
12.3 Electrostatic Discharge Caution ............................ 18
12.4 Glossary ................................................................ 18
13 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (March 2013) to Revision B
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
2 Submit Documentation Feedback
Product Folder Links: TLC5925
Copyright © 2008–2015, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLC5925 SLVS765B – OCTOBER 2008 – REVISED SEPTEMBER 2015 TLC592 5 Low-Power 16-Channel Constant-Current LED Sink Driver 1 Features •1 16 Co nstant-Current Output Channels • Cons tant Output Current Invariant to Load V oltage Change • Excellent Output Curr ent Accuracy: – Between Channels: < 4% (Max) – Between ICs: < ±6% (Max) • Constant Output Current Range: 3 m A to 45 mA • Output Current Adjusted By External Resistor • Fast Response of Output Current, OE (Min): 100 ns • 30-MHz Clock Frequency • Schmitt-Tri gger Inputs • 3.3-V to 5-V Supply Vol tage • Thermal Shutdown for Overtempe rature Protection • ESD Performance: 1-kV HBM 2 Applications • Gaming Mach ine and Entertainment • General LED A pplications • LED Display Systems • Signs LED Lighting • White Goods 3 Description The TLC5925 is designed for LED displays and LED lighting applications. The TLC5925 contains a 16-bit shift register and data latche.
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